M=M means Meth And Math Are Equal. It's when you're teacher says "We're Doing Math" but you're actually doing meth. It's not your fault that your teacher smokes. M=M is like saying that you're teacher is saying the truth but their not. DON'T TRUST TEACHERS!
by Whiteamuiian September 19, 2016

by lucas1234 December 28, 2005

by Melman Gregeen May 15, 2008

The signature move of Rock, Classic Rock, Hard Rock, Alternative Rock, Progressive Rock, Metal, Heavy Metal, Trash Metal, Death Metal, Power Metal, Melodic Death Metal and sometimes even Punk and Grunge listeners.
by arisdenis July 29, 2009

by thetree July 30, 2008
